Regarding the solution of alkali metals in li | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) When alkali metals dissolve in liquid ammonia,they form a deep blue solution due to the presence of ammoniated electrons $(M + (x+y)NH_3 \rightarr

Vedclass · Accepted Answer

None of the above.

Vedclass · Answer

(D) When alkali metals dissolve in liquid ammonia,they form a deep blue solution due to the presence of ammoniated electrons $(M + (x+y)NH_3 \rightarrow [M(NH_3)_x]^+ + [e(NH_3)_y]^-)$.$1$. The blue colour is indeed due to the ammoniated electrons,which absorb energy in the visible region of the spectrum.$2$. Upon dilution,the concentration of ammoniated electrons decreases,leading to a decrease in colour intensity.$3$. On standing for a long time,the solution reacts to form metal amide and hydrogen gas $(2M + 2NH_3 \rightarrow 2MNH_2 + H_2)$,which causes the blue colour to disappear,making the solution colourless.Since all statements $(A)$,$(B)$,and $(C)$ are correct,the incorrect statement is none of these.

Regarding the solution of alkali metals in liquid ammonia,select the incorrect statement.

Similar Questions

Which of the following does not form double salts?

Which of the following carbonates of alkali metals has the least thermal stability?

When carbon monoxide is passed over solid caustic soda heated to $200^{\circ} C$,it forms

Which of the following elements is used in a photoelectric cell?

Why are potassium and cesium,rather than lithium,used in photoelectric cells?

Vedclass Test Series

Exam Paper Generator

Online Exam Module